"Grey's Anatomy" stars Kim Raver, Caterina Scorsone, and Camilla Luddington visit the show.

Next,siblings Biko, Manna, and Mfundo Nhlangothi from the viral musical group Biko's Manna stop by.

Jennifer then welcomes Joy Lindsay from Gary, Indiana. Joy is the founder and CEO of Butterfly Dreamz, a 501(c)(3) nonprofit focused on mentoring girls from underserved communities to become leaders and achieve their goals. Established in 2012 after her sister Kimberly died from gun violence, the organization honors Kimberly's life and belief in the potential of women and girls. Many Butterfly Dreamz mentees go on to be first-generation college graduates and community leaders. Joy is currently pursuing her master's degree at the Harvard Graduate School of Education.

Country music legend and"The Voice" coach Reba McEntire is in the house!

Ray and Eilyn Jimenez from HGTV's "Divided by Design" also join Jennifer in the studio.

Next, Jennifer welcomes Vincent Palmer from Dayton, Ohio, a 3-year-old presidential expert who can recite the names and order of service of each U.S. president. His fascination began with a president-themed book he received as a birthday gift, which quickly became his prized possession. Vincent is also an avid sports fan, cheering for the Cincinnati Reds and the University of Dayton Flyers basketball team. Vincent dreams of either becoming the president or a sports announcer for the Flyers.

Jennifer also welcomes Dr. Mahalia Hines, who is promoting her new book, "Tomorrow's Children: How to Raise Children to Stay Human in a High-Tech Society."